[Stigmaru]

Originally Posted by Mike

Colatkitty's a faster driver, but it doesn't take much to floor it from turn 6 through 8; there's almost no variable other than engine output and aerodynamics. S2ks are power limited through that section. We all take the shortest line, and there's not enough lateral load for it to matter there; I've done it flat with all-season tires on in a buddy's CR. :p

s2ki handle is psychoazn

How does it not matter? T6-T8 has no other significant variables in that every s2k takes the same line. Furthermore, the comparison extends out to other cars with stunning accuracy. S2ks with a GTC-200 low mounted and CR wings will hit the same top speed as S2ks with a high mount GT wing. The high mount GT winged cars are universally exiting T5 faster, and ALL s2ks are flat from the T5 exit to T9 entry. My sample size is roughly 30 cars of varying setups that all consistently yield the same data. Most of these cars are running dataloggers, which confirm the findings.

The tire variable, besides rolling resistance, is eliminated because lateral grip is not an issue, and the s2k doesn't have enough power to spin the tires at triple digit speeds. There's enough variance in rims without correlating data to effectively eliminate that. The section of track involves flooring it for 30+ seconds; everyone can do it, eliminating the driver variable. Power output of the given cars are more or less equalized.

Great, you have a lot of theoretical knowledge. I have real world results. You're welcome to our data if you'd like to take a look. How about a zero-lift G37? I'm sure that was an afterthought.

Aero matters.

I really don't know why you got all defensive and started continuing arguing something I'm not even talking about. We're not talking about whether or not a difference in wing changes aero by 3mph (still assuming all else equal because I wasn't the one who challenged u on variables). Like you, i was also using specific cars to make a point. But a GTR or G37 is a needle in the industry. There are so many cars and so many other cars in history. My point is that I'm disappointed that aerodynamics hasn't taken a more important role in consumer vehicle design. I am not saying aero doesn't matter. Why do I need to look at your data loggers to tell me one wing is more draggier than the other? Yes there are a handful of well engineered cars, but just a handful. I'm addressing a deep problem in automotive design that aero needs to be utilized more in the whole industry not just for the few cars. Anyone can put on a nice enough wing and cancel out lift on a car. Anyone can get upgrade to a nice enough aero kit to give enough downforce at the front to help cancel out lift.

Originally Posted by Mike

For someone with an aero background, I'm surprised you're not bring up frontal area. The number that truely matters is CdA (in which, again, the FT is superior), but is not commonly discussed.

Similarly, everyone is concerned with HP, no AUC.

As you can see from the Wiki link, there is a chart with CdA and yes it is still all over the place. This isn't a aero lesson, this is FT86 vs S2K.

Originally Posted by Mike

The GT-R doesn't need a great CdA; the frontal area is tiny. It's smaller than a Prius (which we can assume is pretty aero optimized). Not sure what your point is. They don't need to focus on Cd alone, but aero is VERY well paid attention to.

I still maintain that the FT will likely have an aero advantage on the S2k. Do you know what the single biggest on-track performance modification you can make on a s2k is besides horsepower or tires? It's a wing.

I'm just trying to say there are other variables to optimize than aerodynamics when i brought up the GTR. Don't know what you mean by not needing a great CdA. CdA... front area is a function of CdA... You don't really pay attention to what i'm saying and too busy chasing your own tail creating tangent arguments.